Wrench.



J. KNOWLES.

WRENCH.; APPLICATIN FILED DEC.4, |916.

2 SHEETS-SHEET I,

25 j 7 hoz j g8 @als/@fa fawlff Patented sept. 25; 191'?.

l. KNOWLES.

WRENCH.

APPLICATION FILED Dec. 4. I9Is.

mem-223..

Patented Sept. 25, 1917.-

2 SHEETS-SHEET 2.

UNXTED STATES PATENT FFQE.

JOSEPH KNOWLES, C'E' EDMONDS, WASHINGTON. i

wennen.

To all whom t may concern.'

Be it known that I, JOSEPH KNowLns, a citizen of the United States, residing at Edmonds, in the county of Snohomish and State of Washington have invented certain new and useful Improvements in Wrenches, of which the following is a specification.

This invention relates to improvements in wrenches, more particularly to the class of pipe wrenches, and has for one of itsobjects to improve the construction and increase the efciency and utility of a device of this character.

Another object of the invention is 'to provide a device of this character in which the outer jaw is rendered slightly yieldable to increase the etliciency when strain is applied.

With these and` other objects in view, the invention consists in certain novel features of construction, as hereinafter shown and described and then specically pointed out in the claims; and in the drawings illustrative of the preferred embodiment of the invention- Figure 1 is a side elevation of the improved implement.

Fig. 2 is a transverse 2-2 of Fig. 1.

Fig. 3 is an elevation viewed from the side opposite to the jaws.'

Fig. 4 is. an elevation jaw side.

Fig. 5 is a perspective view of the recessed or socketed end of the stock.

AFig. 6 is a detached perspective view from beneath of the outer jaw.

Fig. 7 is a detached perspective view of the movable jaw from beneath.

Figs. 8 and 9 are views similar to Figs. 6 and 7 illustrating a modification in the construction.

Corresponding and to in the following cated in all the views of the the same reference characters.

The improved device comprises a stock or body portion 10 extended at one end into a hand grip. The stock is preferably flat or oblong transversely and with screw threads 12 in the opposite edges. At the end opposite to the hand section on the line viewed from the like parts are referred description and indidrawings by laterally to provide a longitudinally di- 5a tion. The Socket-Opens outwardly rected recess or socket 18 with the. sides 14 of the socket extending in parallel relaelld later.-

Speccation of Letters Patent.

grip the stock is enlarged Patented Sept. 25, 1917.

Application led December 4, 1916. Serial No. 134,972.

ally of the stock and is pierced to receive a holdingbolt or pin 15. The outer jaw member is represented at 16 and reduced as shown at 17 to enter the socket 13. The reduced portion 17 is pierced to receive the bolt or pin 15 whereby the jaw member 16 1s swingingly coupled to the stock. The jaw member 16 is formed with an overhanging vportion having pipe or rodl gripping yteeth 18. Bearing over the side portions 14 which define the recess or socket 18l is a relatively heavy ymember 19 of resilient material, preferably spring steel, and secured by a pin 20 to the reduced portion 17 of the outerjaw. l The member 19 corresponds in width to the combined socket 13 and its side members 14, and operates to support the outer jaw slightly yieldable relative tothe stock. The adjacent outer faces ofthe portions 1-1 of the stock at the sides of the socket 13 and the outer face of the portion 17 of the outer jaw are flush, or in alinement transversely of the stoclcwhen the outer jaw is in normal position, as shown iny Fig. 1, so that the resilient member 19 lies flatly against the three portions and eX- tends at its inner end beyond the inner end of the socket. The member 19 thus serves not only the movable jaw in position but also as a clamping member to assist in coupling the movable jaw and the stock. The pivot 15 being located at some distance from the inner end of the portion 17 of the outer jaw, insures the full force of the resilient member being exerted to retain the outer jaw yieldably in normal or initial position.

The member 19 also serves as a housing to effectually cover and protect the joint between the parts 14 and 17 and prevent the entrance of dust or other foreign matter which would injure the parts and cause abrasion between them. Slidably disposed relative to the stock is a movable jaw including a laterally enlarged head portion 21 and a depending portion 22. The jaw portion 21 is provided with pipe or rod engaging teeth 28, which coact with the teeth 18 of the jaw 16. Formed upon or attached to the portion 22 of the movable jaw are arms 24 which project beyond the portion 22 and encompass the threaded portion of the stock 10.

The arms 24 are preferably integral with the portion 22 of the movable ]aw, and .couplethe latter in slidable relation to the as a yieldable means for holding f stock 10. The adjacent faces of the stock and the movable jaw are provided With a coasting slot and lip.

In Figs. 6 and 7 the lip 26 is shown projecting from the portion 17 of the outer jaw andthe slot 27 formed in the movable jaw,

while in Figs. 8 and 9 these portions are reversed with the lip on the movable jaw Vand the slot in the outer jaw. Either arrangement may be employed, as may be preferred.

Mounted for rotation upon the threaded portion of the stock is an operating nut 2,8, preferably cylindrical externally and proy vided with a roughened outer face to-enthe stock the movable jaw will be correspondingly lactuated and adjusted nearer to or farther from the outer jaw, whileI the Y coacting lip 26 and slot 27 retain the movv able jaw in position from lateral movement.

At thefsame time the encompassing' arms 24 retain the movable jaw in position relative -to the stock and prevent j the j displacement therefrom without interfering with the Vmovement of the jaw longitudinally' of the stock.

Having thus described the invention, what is claimed as new is v.

l. In' a wrench, a Vstocklhaving an outwardly opening socket, an outer jaw including a head and a reduced portion with the reduced portion engaging in said socket, a

pivot uniting the socket portion of the stock and the reduced portion of the outer jaw, a resilient member attached to the reduced portion of the outer jaw and corresponding in width to the stock and extending over the reduced portion of the outer jaw and partly over the head of the same and forming a housingto protect the joint between the stock and outer jaw, said resilient member operating to yieldably maintain the outer jaw with its socket engaging portion normally in alinement with the stock, an inner jaw, means for adjusting said innerj aw longitudinally of the stock,y'and a stud and guide channel 'carried by said outer and inner jaws land coasting to prevent .lateral displacement of the inner jaw.v

2. In a Wrench the combination of a stock having an outwardly opening socket, an outer jaw including a head and a ,reduced portion engaging in said socket and provided withy an outwardly directed stud, pivot extending through the socket portion of the stock and the reduced portion ofthe outer jaw, a resilient member attached to the reduced portion of the outer jaw and corresponding inwidth to the stock and extending over the reduced portiony of the V'outer jaw and partly over the head of thesame and forming a. housing to protect the jointV between the stock and the outer jaw, saidv resilient member operating to yieldably maintain` the outer jaw with its socket engaging portion normally inV alinement with the stock7 an inner jawv having a longitudinally directed channel to receive said stud, and means` for adjusting said innerj aw longitudinally of the stock.

In testimony whereof vI'afiix my signature.

JosEPHj'K'N'oWLEs. faja] Uopies of this patent'may be obtained for tive cents each, by addressingV the Commissioner of Patents,

' i vwashi'ngtom D. C. 

